To sue a court-appointed master who has quasi-judicial immunity, an individual must seek leave of the appointing court. This includes court-appointed forensic accountants who were acting within the scope of their duties.
Campau, Sydney, "Bertsch v. Eighth Jud. Dist. Ct., 133 Nev. Adv. Op. 33, (June 22, 2017)" (2017). Nevada Supreme Court Summaries. 1049.